The Rhizosphere of Mycorrhizae

Rambelli, A.

doi:10.1016/b978-0-12-472850-9.50014-1

Cited by 133 publications

(65 citation statements)

References 83 publications

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“…In addition, because the ectomycorrhizal symbiosis modifies root morphology by promoting root branching (Linderman, 1988), the volume of the mycorrhizosphere soil is larger than the rhizosphere one. From a biochemical point of view, root exudation in the mycorrhizosphere is quantitatively and qualitatively different from that in the rhizosphere because mycorrhizal fungi use some of the root exudates and modify the root metabolic functions (Rambelli, 1973;Leyval & Berthelin, 1993;Rygiewicz & Andersen, 1994). Furthermore, mycorrhizal fungi associated with plant roots can produce antibiotics (Olsson et al ., 1996).…”

Section: Introductionmentioning

confidence: 99%

Ectomycorrhizal symbiosis affects functional diversity of rhizosphere fluorescent pseudomonads

et al. 2004

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Summary• Here we characterized the effect of the ectomycorrhizal symbiosis on the genotypic and functional diversity of soil Pseudomonas fluorescens populations and analysed its possible consequences in terms of plant nutrition, development and health.• Sixty strains of P. fluorescens were isolated from the bulk soil of a forest nursery, the ectomycorrhizosphere and the ectomycorrhizas of the Douglas fir ( Pseudostuga menziesii ) seedlings-Laccaria bicolor S238N. They were characterized in vitro with the following criteria: ARDRA, phosphate solubilization, siderophore, HCN and AIA production, genes of N 2 -fixation and antibiotic synthesis, in vitro confrontation with a range of phytopathogenic and ectomycorrhizal fungi, effect on the Douglas fir-L. bicolor symbiosis.• For most of these criteria, we demonstrated that the ectomycorrhizosphere significantly structures the P. fluorescens populations and selects strains potentially beneficial to the symbiosis and to the plant.• This prompts us to propose the ectomycorrhizal symbiosis as a true microbial complex where multitrophic interactions take place. Moreover it underlines the fact that this symbiosis has an indirect positive effect on plant growth, via its selective pressure on bacterial communities, in addition to its known direct positive effect.

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Section: Introductionmentioning

confidence: 99%

Ectomycorrhizal symbiosis affects functional diversity of rhizosphere fluorescent pseudomonads

et al. 2004

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“…Plusieurs travaux ont montré qu'une grande diversité de champignons symbiotiques sont associés à plusieurs espèces de plantes (Wang et Qiu, 2006 ;Rinaldi et al, 2008). Cependant, des études faites au Sénégal (Thöen et Bâ, 1989), au Burkina Faso (Sanon et al, 1997 ;Guissou et al, 2005), au Nigéria (Redhead, 1968) et en Côte d'Ivoire (Rambelli, 1973) ont montré un faible nombre d'espèces ligneuses à ectomycorhizes. Par ailleurs, en Afrique de l'Ouest, beaucoup des recherches sur les champignons supérieurs ont été effectuées dans les forêts et réserves soudaniennes du Sénégal, de la Guinée, du Bénin et du Burkina Faso Guissou et al, 2005 ;Rivière et al, 2007 ;Sanon et al, 2009 ;Diédhiou et al, 2010 ;Bâ et al, 2011).…”

Section: Introductionunclassified

Diversité des champignons basidiomycètes à carpophores inféodés à certaines espèces des Caesalpiniaceae du Parc National du W du Niger (Afrique de l’Ouest)

Ibrahim¹,

Hama²,

Daniëls³

et al. 2017

J. App. Bioscience.

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Diversity of carpophoric basidiomycete fungi infected with some species of Caesalpiniaceae from W Niger National Park (West Africa) ABSTRACT Objective: to contribute to the better understanding of macromycetes of Niger. It was conducted in the W National Park, which is located in the richest area in terms of biodiversity in the country. Methodologies and results: An inventory of fungi was conducted in four vegetation types: tree and shrub savanna with Afzelia africana and Combretum glutinosum (site 1); woodland with Isoberlinia doka and Anogeissus leiocarpa (Site 2); woodland with Isoberlinia doka and Berlinia grandiflora (site 3) and tree and shrub savanna with Burkea africana and Terminalia avicennioides (Site 4). In total, 56 species of macromycetes were identified at the study area belonging to 22 genera and 21 families. The ectomycorrhizal species amounted to 21, including 17 in site 1; 9 species in site 3; 3 in site 2 and one in site 4. This is due to the presence of some tree species from the Caesalpiniaceae family, namely Afzelia africana, Isoberlinia doka, Berlinia grandiflora and Burkea africana. Conclusion and application of results: Five ectomycorrhizal species (Amanita odorata, A. subviscosa, Lactarius gymnocarpoides, Russula albofloccosa and Phylloporus purpureus) were common tree and shrub savanna with A. africana and C. micranthum and woodland with I. doka and B. grandiflora.

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“…AMF can interact with different bacterial species. These interactions occur in the root zone and fungal hyphae, commonly referred to as 'mycorrhizosphere' (Rambelli, 1973). Compared to the rhizosphere region of the plant the mycorrhizosphere has increased the area of the rhizosphere by extending the mycelium of the fungus (Fig.…”

Section: Amfmentioning

confidence: 99%

Synergistic Effects of Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Rhizobacteria for Sustainable Agricultural Production

Krishnamoorthy¹,

Joe²,

Kim³

et al. 2011

Korean Journal of Soil Science and Fertilizer

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Soil microorganisms play a major role in improving soil fertility and plant health. Symbiotic arbuscular mycorrhizal fungi (AMF) form a key component of the soil microbial populations. AMF form a mutualistic association with the host plant and exert a positive influence on its growth and nutrient uptake. The establishment of mycorrhizal symbioses with the host plant can positively be influenced by plant growth promoting rhizobacteria through various mechanisms such as increased spore germination and hyphal permeability in plant roots. Though there are evidences that combined interactions between AMF and PGPR can promote the plant growth however mechanisms of these interactions are poorly understood. Better understanding of the interactions between AMF and other microorganisms is necessary for maintaining soil fertility and enhancing crop production. This paper reviews current knowledge concerning the interactions between AMF and PGPR with plants and discusses on enhanced nutrient availability, biocontrol, abiotic stress tolerance and phytoremediation in sustainable agriculture.

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The Rhizosphere of Mycorrhizae

Cited by 133 publications

References 83 publications

Ectomycorrhizal symbiosis affects functional diversity of rhizosphere fluorescent pseudomonads

Ectomycorrhizal symbiosis affects functional diversity of rhizosphere fluorescent pseudomonads

Diversité des champignons basidiomycètes à carpophores inféodés à certaines espèces des Caesalpiniaceae du Parc National du W du Niger (Afrique de l’Ouest)

Synergistic Effects of Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Rhizobacteria for Sustainable Agricultural Production

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